A vaginal yeast infection typically produces a thick, white discharge that looks like cottage cheese, along with noticeable redness and swelling of the vulva. About 70 to 75 percent of women will experience at least one yeast infection in their lifetime, making it the second most common vaginal infection in the United States. Knowing what to look for can help you distinguish it from other conditions that may need different treatment.
The Discharge
The most recognizable sign is the discharge. It’s white, thick, and clumpy, often described as resembling cottage cheese. It tends to cling to the vaginal walls rather than flowing freely. In some cases the discharge is more watery than clumpy, but it stays white or off-white. Unlike bacterial infections, yeast infection discharge usually has no strong odor, or it carries only a mild, bread-like smell.
The amount of discharge varies. Some women produce very little, while others notice enough to stain underwear throughout the day. The texture and volume don’t necessarily reflect how severe the infection is. What matters more, in terms of severity, is the condition of the surrounding skin.
Redness, Swelling, and Skin Changes
Beyond discharge, a yeast infection changes the appearance of the vulvar skin. The labia and the tissue around the vaginal opening often become visibly red and puffy. In mild cases, this looks like general irritation. In more severe infections, the redness can be intense and widespread, covering most of the external genital area.
As the infection progresses or worsens, the skin can develop small cracks (fissures) and raw, scraped-looking patches called excoriations. These often result from a combination of the infection itself and scratching caused by intense itching. The skin may look shiny or feel tight due to swelling. In some cases, you’ll notice tiny satellite spots of redness just outside the main affected area, which is a hallmark of yeast overgrowth spreading across the skin.
If the infection reaches surrounding skin folds, you may see a red rash with visible skin breakdown or patches that ooze clear fluid.
How It Feels Alongside How It Looks
The visual signs rarely show up in isolation. Itching is almost always present and is usually the symptom that gets noticed first, even before visible changes appear. The vulvar skin may burn, especially during urination or intercourse. Soreness and general discomfort in the area are common, and the swollen tissue can make sitting or wearing tight clothing uncomfortable.
If you notice tears, cracks, or open sores on the vulvar skin, that points toward a more severe (sometimes called “complicated”) infection. These cases involve extensive redness and swelling and tend to respond more slowly to standard short-course treatments.
Yeast Infection vs. Bacterial Vaginosis
These two conditions are easy to confuse because both cause abnormal discharge, but they look and smell quite different. Bacterial vaginosis (BV) produces a thin, grayish discharge that’s often heavier in volume and comes with a noticeable fishy odor, especially after your period or after sex. Yeast infection discharge is thicker, whiter, clumpier, and largely odorless.
The skin changes also differ. Yeast infections cause more visible redness, swelling, and itching on the vulva. BV tends to cause less external irritation and focuses more on internal symptoms like discharge and odor. This distinction matters because BV requires antibiotics, while yeast infections are treated with antifungals. Using the wrong treatment won’t resolve the problem.
What Happens If It Goes Untreated
A yeast infection that’s left alone doesn’t typically become dangerous, but it does get worse visually and physically. The redness spreads, the skin becomes more fragile, and cracks or raw spots can open the door to a secondary bacterial infection. Signs of that complication include skin that feels warm to the touch, increasing redness that spreads outward, and drainage that turns from clear to cloudy or yellowish.
Persistent scratching from ongoing itching can also cause the vulvar skin to thicken over time, a process where the skin develops a rough, leathery texture. This is the body’s protective response to repeated irritation, but it can make the area look and feel different even after the infection clears.
What a Diagnosis Involves
Visual appearance alone isn’t always enough for a definitive diagnosis. During an exam, a clinician looks for the characteristic discharge and checks for vulvar redness, swelling, fissures, and excoriations. A sample of the discharge can be examined under a microscope, where yeast cells appear as small oval shapes, sometimes forming branching chains. A vaginal pH test can also help narrow things down. Normal vaginal pH falls between 3.8 and 4.5, and yeast infections tend to keep the pH in that normal acidic range, while bacterial infections push it higher. If your pH is elevated, the cause is more likely bacterial than yeast.
This testing matters because roughly two-thirds of women who self-diagnose a yeast infection based on appearance alone turn out to have something else. Getting the right diagnosis saves time, money, and the frustration of treating the wrong condition.